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* MFC Revision 1.123:David Xu2005-06-281-1/+1
| | | | | | | Fix off-by-one nanosecond in macro TIMESPEC_ADD. Notes: svn path=/stable/5/; revision=147642
* MFC:Joe Marcus Clarke2005-05-114-9/+24
| | | | | | | | | | | | | | Increase the default stacksizes: 32-bit 64-bit main thread 2MB 4MB other threads 1MB 2MB Approved by: eischen re (scottl no longer objects since 5.4 is out) Notes: svn path=/stable/5/; revision=146102
* MFC Most of the various fixes and changes to libpthread from HEAD to 5.xJohn Baldwin2005-02-0415-365/+439
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | including: Pull debug symbols in for statically linked binaries. gcc -O2 cleanups. Don't call _thr_start_sig_daemon() when SYSTEM_SCOPE_ONLY is defined. If a system scope thread didn't set a timeout, don't call the clock_gettime system call before and after sleeping. Add missing reference count drops to close a memory leak. Save cancelflags in signal frame. Use a generic way to back threads out of wait queues when handling signals instead of having more intricate knowledge of thread state within signal handling. Simplify signal code because of above (by David Xu). Use macros for libpthread usage of pthread_cleanup_push() and pthread_cleanup_pop(). This removes some instances of malloc() and free() from the semaphore and pthread_once() implementations. When single threaded and forking(), make sure that the current thread's signal mask is inherited by the forked thread. Use private mutexes for libc and libpthread. Signals are deferred while threads hold private mutexes. This fix breaks an internal system ABI that old versions of the www/linuxpluginwrapper port depend on. Upgrading that port to the latest version will fix that. Fix race condition in condition variables where handling a signal (pthread_kill() or kill()) may not see a wakeup (pthread_cond_signal() or pthread_cond_broadcast()). Don't panic when sigsuspend is interrupted by a cancellation. Notes: svn path=/stable/5/; revision=141287
* MFC: Check unhandled signals before thread marks itself as DEAD;John Baldwin2005-02-041-1/+14
| | | | | | | this reduces chances of losing a signal. Notes: svn path=/stable/5/; revision=141285
* MFC:Julian Elischer2004-10-315-24/+45
| | | | | | | | | | | | | | | | Revision Changes Path 1.58 +1 -0 src/lib/libpthread/thread/thr_create.c 1.14 +1 -1 src/lib/libpthread/thread/thr_find_thread.c 1.115 +27 -10 src/lib/libpthread/thread/thr_kern.c 1.119 +15 -11 src/lib/libpthread/thread/thr_private.h 1.81 +1 -2 src/lib/libpthread/thread/thr_sig.c fix race conditions Approved by: re (scottl) Notes: svn path=/stable/5/; revision=137094
* MFC:Julian Elischer2004-10-112-17/+23
| | | | | | | | | | | | | Capture calls to execve() to make sure that the signal mask is set correctly on the thread that is going to continue in the new process. Required for Posix compliance. This is not perfect and better fixes may happen after 5.3 is released. Approved by: re (scottl) Notes: svn path=/stable/5/; revision=136394
* MFC 1.9:David Xu2004-10-091-7/+17
| | | | | | | | | | | Allocate red zone and stack space together and then split red zone from allocated space, orignal code left red zone unallocated, but those space can be allocated by user code, and result was providing no protection. Approved by: re (scottl) Notes: svn path=/stable/5/; revision=136308
* This commit was manufactured by cvs2svn to create branch 'RELENG_5'.cvs2svn2004-10-091-0/+63
| | | | Notes: svn path=/stable/5/; revision=136302
* 1. Add macro DTV_OFFSET to calculate dtv offset in tcb.David Xu2004-08-161-0/+1
| | | | | | | 2. Export symbols needed by debugger. Notes: svn path=/head/; revision=133801
* Add a file to collection all symbols will be needed by debugger.David Xu2004-08-161-0/+60
| | | | Notes: svn path=/head/; revision=133800
* Add TLS support for i386 and amd64.Doug Rabson2004-08-151-1/+1
| | | | Notes: svn path=/head/; revision=133756
* As long as we have a knob to force system scope threads, why not haveDaniel Eischen2004-08-124-8/+13
| | | | | | | | | | | | | | | | a knob to force process scope threads. If the environment variable LIBPTHREAD_PROCESS_SCOPE is set, force all threads to be process scope threads regardless of how the application creates them. If LIBPTHREAD_SYSTEM_SCOPE is set (forcing system scope threads), it overrides LIBPTHREAD_PROCESS_SCOPE. $ # To force system scope threads $ LIBPTHREAD_SYSTEM_SCOPE=anything threaded_app $ # To force process scope threads $ LIBPTHREAD_PROCESS_SCOPE=anything threaded_app Notes: svn path=/head/; revision=133563
* Check debugger suspending flag for system scope thread.David Xu2004-08-081-3/+7
| | | | | | | Reviewed by: deischen Notes: svn path=/head/; revision=133344
* Add a way to force 1:1 mode for libpthread. To do this, defineDaniel Eischen2004-08-075-42/+41
| | | | | | | | | | | | | | LIBPTHREAD_SYSTEM_SCOPE in the environment. You can still force libpthread to be built in strictly 1:1 by adding -DSYSTEM_SCOPE_ONLY to CFLAGS. This is kept for archs that don't yet support M:N mode. Requested by: rwatson Reviewed by: davidxu Notes: svn path=/head/; revision=133269
* s/TMDF_DONOTRUNUSER/TMDF_SUSPEND/gDavid Xu2004-08-033-4/+4
| | | | | | | Dicussed with: deischen Notes: svn path=/head/; revision=133047
* Don't include lock.h and pthread_md.h when we're being included byMarcel Moolenaar2004-07-181-0/+2
| | | | | | | libthread_db. Both headers are included seperately. Notes: svn path=/head/; revision=132333
* Remove unused symbols.David Xu2004-07-131-14/+0
| | | | Notes: svn path=/head/; revision=132124
* Let debugger check signal, make SIGINFO works.David Xu2004-07-131-12/+25
| | | | Notes: svn path=/head/; revision=132122
* If _libkse_debug is not zero, activate thread mode.David Xu2004-07-131-0/+6
| | | | Notes: svn path=/head/; revision=132121
* Add code to support thread debugging.David Xu2004-07-135-44/+146
| | | | | | | | | | | | | | | | | | 1. Add global varible _libkse_debug, debugger uses the varible to identify libpthread. when the varible is written to non-zero by debugger, libpthread will take some special action at context switch time, it will check TMDF_DOTRUNUSER flags, if a thread has the flags set by debugger, it won't be scheduled, when a thread leaves KSE critical region, thread checks the flag, if it was set, the thread relinquish CPU. 2. Add pq_first_debug to select a thread allowd to run by debugger. 3. Some names prefixed with _thr are renamed to _thread prefix. which is allowed to run by debugger. Notes: svn path=/head/; revision=132120
* Check pending signals, if there is signal will be unblocked byDavid Xu2004-06-124-22/+25
| | | | | | | | | | | | | | | | | | | | | sigsuspend, thread shouldn't wait, in old code, it may be ignored. When a signal handler is invoked in sigsuspend, thread gets two different signal masks, one is in thread structure, sigprocmask() can retrieve it, another is in ucontext which is a third parameter of signal handler, the former is the result of sigsuspend mask ORed with sigaction's sa_mask and current signal, the later is the mask in thread structure before sigsuspend is called. After signal handler is called, the mask in ucontext should be copied into thread structure, and becomes CURRENT signal mask, then sigsuspend returns to user code. Reviewed by: deischen Tested by: Sean McNeil <sean@mcneil.com> Notes: svn path=/head/; revision=130374
* After forking and initializing the library to single-threadedDaniel Eischen2004-04-081-2/+3
| | | | | | | | | | | | | mode (where the forked thread is the one and only thread and is marked as system scope), set the system scope flag before initializing the signal mask. This prevents trying to use internal locks that haven't yet been initialized. Reported by: Dan Nelson <dnelson at allantgroup.com> Reviewed by: davidxu Notes: svn path=/head/; revision=128041
* Fix a POSIX conformance bug. POSIX says sigwait should return error numberDavid Xu2004-03-171-3/+3
| | | | | | | in return value not in errno. Notes: svn path=/head/; revision=127102
* Fixed a misspelling of 0 as NULL.Bruce Evans2004-03-141-1/+1
| | | | Notes: svn path=/head/; revision=126952
* style cleanup: Remove duplicate $FreeBSD$ tags.Colin Percival2004-02-101-2/+0
| | | | | | | | | | | These files had tags after the copyright notice, inside the comment block (incorrect, removed), and outside the comment block (correct). Approved by: rwatson (mentor) Notes: svn path=/head/; revision=125668
* Add cancellation point to sem_wait() and sem_timedwait() for psharedDaniel Eischen2004-02-061-10/+18
| | | | | | | | | | | semaphores. Also add cancellation cleanup handlers to keep semaphores in a consistent state. Submitted in part by: davidxu Reviewed by: davidxu Notes: svn path=/head/; revision=125522
* Provide a userland version of non-pshared semaphores and add cancellationDaniel Eischen2004-02-032-168/+152
| | | | | | | points to sem_wait() and sem_timedwait(). Also make sem_post signal-safe. Notes: svn path=/head/; revision=125373
* Return EPERM if mutex owner is not current thread but it tries toDavid Xu2004-01-171-18/+3
| | | | | | | | | unlock the mutex, old code confuses some programs when it returns EINVAL. Noticed by: bland Notes: svn path=/head/; revision=124606
* Add a simple work-around for deadlocking on recursive read locksDaniel Eischen2004-01-083-48/+86
| | | | | | | | | | | | | on a rwlock while there are writers waiting. We normally favor writers but when a reader already has at least one other read lock, we favor the reader. We don't track all the rwlocks owned by a thread, nor all the threads that own a rwlock -- we just keep a count of all the read locks owned by a thread. PR: 24641 Notes: svn path=/head/; revision=124252
* Kernel now supports per-thread sigaltstack, follow the change toDavid Xu2004-01-031-6/+1
| | | | | | | enable sigaltstack for scope system thread. Notes: svn path=/head/; revision=124095
* Return error code in errno, not in return value.David Xu2004-01-021-3/+6
| | | | Notes: svn path=/head/; revision=124056
* Fix a typo.David Xu2004-01-021-1/+1
| | | | Notes: svn path=/head/; revision=124055
* Forgot to commit this file for last commit. :(David Xu2003-12-291-0/+4
| | | | Notes: svn path=/head/; revision=123975
* Implement sigaltstack() as per-threaded. Current only scope process threadDavid Xu2003-12-294-24/+231
| | | | | | | | | | | is supported, for scope system process, kernel signal bits need to be changed. Reviewed by: deischen Tested on : i386 amd64 ia64 Notes: svn path=/head/; revision=123974
* Correctly retrieve sigaction flags.David Xu2003-12-281-2/+2
| | | | Notes: svn path=/head/; revision=123933
* Replace a comment with more accurated one, memory heap is now protected byDavid Xu2003-12-191-3/+2
| | | | | | | new fork() wrapper. Notes: svn path=/head/; revision=123668
* Code clean up, remove unused MACROS and function prototypes.David Xu2003-12-191-18/+0
| | | | Notes: svn path=/head/; revision=123666
* accept() returns a file descriptor when it succeeds which is veryDaniel Eischen2003-12-092-2/+2
| | | | | | | | | | | | likely to be non-zero. When leaving the cancellation point, check the return value against -1 to see if cancellation should be checked. While I'm here, make the same change to connect() just to be consisitent. Pointed out by: davidxu Notes: svn path=/head/; revision=123365
* Remove an unused struct definition.Daniel Eischen2003-12-091-12/+0
| | | | Notes: svn path=/head/; revision=123356
* Add cancellation points for accept() and connect().Daniel Eischen2003-12-094-0/+102
| | | | Notes: svn path=/head/; revision=123355
* Use mutex instead of low level thread lock to implement spinlock, thisDavid Xu2003-12-091-30/+18
| | | | | | | avoids signal to be blocked when otherwise it can be handled. Notes: svn path=/head/; revision=123314
* Rename _thr_enter_cancellation_point to _thr_cancel_enter, renameDavid Xu2003-12-0930-136/+148
| | | | | | | | | | | | | | | | | | | | | | | | _thr_leave_cancellation_point to _thr_cancel_leave, add a parameter to _thr_cancel_leave to indicate whether cancellation point should be checked, this gives us an option to not check cancallation point if a syscall successfully returns to avoid any leaks, current I have creat(), open() and fcntl(F_DUPFD) to not check cancellation point after they sucessfully returned. Replace some members in structure kse with bit flags to same some memory. Conditionally compile THR_ASSERT to nothing if _PTHREAD_INVARIANTS is not defined. Inline some small functions in thr_cancel.c. Use __predict_false in thr_kern.c for some executed only once code. Reviewd by: deischen Notes: svn path=/head/; revision=123312
* More reliably check timeout for pthread_mutex_timedlock.David Xu2003-12-091-1/+1
| | | | Notes: svn path=/head/; revision=123310
* Go back to using rev 1.18 where thread locks are used instead of KSEDaniel Eischen2003-12-081-17/+16
| | | | | | | | | | locks for [libc] spinlock implementation. This was previously backed out because it exposed a bug in ia64 implementation. OK'd by: marcel Notes: svn path=/head/; revision=123297
* 1.Macro optimizing KSE_LOCK_ACQUIRE and THR_LOCK_ACQUIRE to use static fallDavid Xu2003-11-292-99/+31
| | | | | | | | | | | | | | | | | through branch predict as suggested in INTEL IA32 optimization guide. 2.Allocate siginfo arrary separately to avoid pthread to be allocated at 2K boundary, which hits L1 address alias problem and causes context switch to be slow down. 3.Simplify context switch code by removing redundant code, code size is reduced, so it is expected to run faster. Reviewed by: deischen Approved by: re (scottl) Notes: svn path=/head/; revision=123048
* Remove surplus mmap() call for stack guard page in init_private, it is doneDavid Xu2003-11-291-25/+0
| | | | | | | | | | | in init_main_thread. Also don't initialize lock and lockuser again for initial thread, it is already done by _thr_alloc(). Reviewed by: deischen Approved by: re (scottl) Notes: svn path=/head/; revision=123047
* Back out last change and go back to using KSE locks instead of threadDaniel Eischen2003-11-161-16/+17
| | | | | | | | | locks until we know why this breaks ia64. Reported by: marcel Notes: svn path=/head/; revision=122801
* If a thread in critical region got a synchronous signal, according currentDavid Xu2003-11-091-0/+2
| | | | | | | | | signal handling mode, there is no chance to handle the signal, something must be wrong in the library, just call kse_thr_interrupt to dump its core. I have the code for a long time, but forgot to commit it. Notes: svn path=/head/; revision=122338
* Use THR lock instead of KSE lock to avoid scheduler be blocked in spinlock.David Xu2003-11-081-17/+16
| | | | | | | Reviewed by: deischen Notes: svn path=/head/; revision=122299
* style(9)Daniel Eischen2003-11-051-40/+53
| | | | | | | Reviewed by: bde Notes: svn path=/head/; revision=122131
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